Epping Weather Station

Monthly Summary: January 2009 (Daily Readings)

 

Temperature °C
   Date or compared to 1971-2000 average
Mean Maximum
5.2
-1.1
Mean Minimum
0.4
-1.2
Monthly Mean
2.8
-1.2
Highest Maximum
9.5
12th
Lowest Maximum
-0.7
6th
Highest Minimum
7.5
13th
Lowest Minimum
-6.1
7th
Lowest Grass Min
-12.0
6th
Wind mph
Mean wind speed
5.0
Strongest Gust
37.0
Date
17th
Dominant Direction
SSW
Direction at 0900
N
NE
E
SE
S
SW
W
NW
CALM
No of mornings
0
3
6
0
12
2
5
2
1
Precipitation mm
 Date or compared to 1971-2000 average
Monthly Total
66.0
105.8%
Wettest Day (09-09)
12.7
18th
Rain Days (>0.2mm)
15
Wet Days (>1mm)
12
Sunshine hours
Monthly Total
75.08
% Average
143.0
Days with no sun
6
Sunniest day
7.21
Date
6th
Number of days with
Air Frost
11
Ground Frost
21
Snow/sleet falling (0000-2400GMT)
3
>50% snow cover at 0900
3
Fog at 0900 (vis <1000m)
4
Thunder heard
0
Hail <5mm diameter
0
Hail > 5mm diameter
0

 
Miscellaneous Data
Mean Relative Humidity at 0900 (%)
89
Mean Air Pressure at 0900 (mb)
1010.4
Lowest Pressure
966.4
Date
23rd
Highest Pressure
1031.4
Date
2nd
Hours of air frost
154.3
Mean soil temp °C (20cm depth)
2.8
Greatest snow depth (0900)
1.5
Date
5th
Particular days/events

6th. Grass minimum of -12.0º
7th. Minimum temperature of -6.1º was the lowest for January since 1993
12th. Maximum temperature of 9.5º was the lowest monthly high maximum for January since 1987

5th,6th and 7th. More than 50% ground covered by snow at 0900

The first 10 days were particularly cold with snow on the ground for 3 days and local roads very icy

 

 

 

Month as a whole

Coldest January since 1997 and 6th coldest since records began here in 1979
Sunniest since 2005

 

 

 

 

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The data on this website may be freely used for personal and/or academic purposes only - please acknowledge source in publication
(amended January 2009)

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